Prevalence of wind farm amplitude modulation at long-range residential locations
Date
2019
Authors
Hansen, K.L.
Nguyen, P.
Zajamšek, B.
Catcheside, P.
Hansen, C.H.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Journal of Sound and Vibration, 2019; 455:136-149
Statement of Responsibility
Kristy L. Hansen, Phuc Nguyen, Branko Zajamšek, Peter Catcheside, Colin H. Hansen
Conference Name
Abstract
The presence of amplitude modulation (AM) in wind farm noise has been shown to result in increased annoyance. Therefore, it is important to determine how often this characteristic is present at residential locations near a wind farm. This study investigates the prevalence and characteristics of wind farm AM at 9 different residences located near a South Australian wind farm that has been the subject of complaints from local residents. It is shown that an audible indoor low-frequency tone was amplitude modulated at the blade-pass frequency for 20% of the time up to a distance of 2.4 km. The audible AM occurred for a similar percentage of time between wind farm percentage power capacities of 40 and 85%, indicating that it is important that AM analysis is not restricted to high power output conditions only. Although the number of AM events is shown to reduce with distance, audible indoor AM still occurred for 16% of the time at a distance of 3.5 km. At distances of 7.6 and 8.8 km, audible AM was only detected on one occasion. At night-time, audible AM occurred indoors at residences located as far as 3.5 km from the wind farm for up to 22% of the time.
School/Discipline
Dissertation Note
Provenance
Description
Access Status
Rights
© 2019 Elsevier Ltd. All rights reserved.